(16) باب فَضْلِ الصَّلاَةِ فِي جَمَاعَةٍ
It was narrated that Abu Hurairah said:
"The Messenger of Allah said: 'A man's prayer in congregation is twenty-some levels higher than his prayer in his house or in the marketplace.'"
Reference: Sunan Ibn Majah 786
In-book reference: Book 4, Hadith 52
English translation: Vol. 1, Book 4, Hadith 786